linux-kernel - Re: [PATCH -next 3/3] kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN

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Message-ID: <a0431275-2ca1-0d5e-72e2-9ec6b256cbf1@huawei.com>
Date:   Sat, 17 Jul 2021 10:40:42 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Marco Elver <elver@...gle.com>
CC:     Dmitry Vyukov <dvyukov@...gle.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <kasan-dev@...glegroups.com>,
        <linux-mm@...ck.org>, Daniel Axtens <dja@...ens.net>
Subject: Re: [PATCH -next 3/3] kasan: arm64: Fix pcpu_page_first_chunk crash
 with KASAN_VMALLOC


On 2021/7/16 15:41, Marco Elver wrote:
> On Fri, 16 Jul 2021 at 07:06, Kefeng Wang <wangkefeng.wang@...wei.com> wrote:
>> Hi Marco and Dmitry, any comments about the following replay, thanks.
> Can you clarify the question? I've been waiting for v2.
>
> I think you said that this will remain arm64 specific and the existing
> generic kasan_populate_early_shadow() doesn't work.

Yes, I can't find a generic way to solve the issue, if there is no 
better way, I

will send a new version(fix the build error and the wrong __weak comment)

>
> If there's nothing else that needs resolving, please go ahead and send
> v2 (the __weak comment still needs resolving).
Thanks. will do.
>
> Thanks,
> -- Marco
> .
>